/**
 * Copyright (C) 2007 Mustafa K. Isik - isik@acm.org
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
 */

package com.paxcodi.threads.diner;

class Philosopher implements Runnable{

	private int seatNumber;


	/**
	 * Initializes philosopher to be thinking.
	 * @param seatNumber index of chair on which philosopher is seated - required in order to derive relevant chopsticks
	 */
	Philosopher(int seatNumber) {
		this.seatNumber = seatNumber;
	}

	public void run() {
		while(true){
			CircularTable.getInstance().requestChopsticksForSeat(seatNumber);
			eat();
			//release lock on chopsticks upon finishing this bite
			CircularTable.getInstance().releaseChopsticksForSeat(seatNumber);
			//chew, swallow and start digesting last bite :)
			try {
				Thread.sleep(1000);
			} catch (InterruptedException e) {
				System.err.println("Interrupted during sleep ...: " + Thread.currentThread().getName());
			}
		}
	}

	private void eat(){
		System.out.println("Philosopher number " + Thread.currentThread().getName() + " is eating.");
		try {
			Thread.sleep(1000);
		} catch (InterruptedException e) {
			System.err.println("Interrupted during sleep ...: " + Thread.currentThread().getName());
		}
	}

}
